Device for controlling oil-burners.



E. M. OASKEY. DEVICE FOR CONTROLLING. OIL BIIIRNEES.

APPLICATION FILED NOV. 27, 1911.

onrrnn s'rnrns PATENT ar s;

EDGAR.M. vGASLKEY, OF CHICAGO, ILLINOIS, ASSIGNOR TO S. F. BOWSEB- 8s (10., INCL, OF FORT WAYNE, INDIANA, A COBPO-RATIGN 0F I1\I'ZII)IAI I.A.v

imvrcn FOB coivrnortme OIL-BURNERS.

To all whom it may concern Be'it knownthat I, EDGAR M. CASKEY, a" citizen ofthe United States, residing at Chicago, in the county'of Cook and State of Illinois, have invented certain new and useful Improvements in Devices for Controlling Gil-Burners, of which the following is aspecification. v The invention relates to oil burning devices for heating furnaces and the like, and the primary object is to provide an improved mechanism for controlling the oil and airsupply, whereby careless or incompetentoperators may be prevented from causin explosion from the burner on account of'flhoding the device with oil and an insufficient supply of air to producethe proper combustible mixture.

To obtain these ends and to accomplish other new and useful'objects, which will hereafter appear, the invention consists in the features of novelty and in the improved arrangement of parts described in the following specification, shown in the drawing and set forth more specifically in the claims.

In the said drawing, Figurel'isa front elevation view of the device. Fig. 2' is a plan view of the same. In both of said views the burner is shown, together with the mechanism for supplying the fuel theretov and the additional mechanism for controlling the same. Fig. 3 is a sectional View through the oil supply pipe showing the details of construction of an adjustable stop for limiting the movement of the oil valve operating lever.

The furnace or range to which the device is adapted to supply fuel forming no part of the present invention is omitted, since it will be seen that a burner of the general form as shown more clearly in Fig. 2, and indicated by the reference character 10, may be used in connection with various forms of furnaces or ranges. Also the character of construction and the means for directly controlling the burner areimmaterial, in so far as the present invention is concerned, except that it is customary to arrange the burner casting 1O somewhat as shown in Fig. 2 of a conical form, or more strictly speaking, of a frusto conical form, the .orifice for the exit of the fuel being at the pointed end of the burner, and the mixing Specification of Letters Patent.

chamber of the interior thereof being under control of a suitable hand operated valve, the hand portion of which is indicated by the reference character 11. and the stem at 1,2. j g '13 is a pipe for supplying oil, and: leads to a point adjacent the furnace in order to communicate with the burner 10, which in thepresent embodiment of the invention is accomplished by threading the burner 10 into the elbow joint 14-, which is provided with an air passage and in turn threaded 'upon the upper extremity-of the oil pipe 13.

'The same general construction is employed on the other side of the burner where the air pipe 15 approximately parallels the oil pipe 13, and is provided at its upper extremity with the elbow joint 16, likewise threaded to the upper extremity thereof and to the burner 10. Both the oil and air pipes 13, 15 in the embodiment of the invention illustrated are shown passing upwardly through the floor indicated at17, although the manner of supporting these pipes, it will be apparent, will depend upon the character of installation in e'ach instance. Som'uch of the apparatus as has already been described has been thought sufficient heretofore to sup ply combustible mixture to the burner 10,

which is placed within the fire box of a furnace or range.-.

The form of burner and the accompanying details illustrated are particularly adapted for use in connection with furnaces or ranges used in cooking where it is necessary that they be operated on a large scale, and in hotels, restaurants and the like, although the burner is readily adapted to be used in connection with fire boxes or furnaces and grates of various character, and in fact in almost every case where fuel oil burners may be employed.

Heretofore, in burners of the character de-- scribed, the supply ducts such as pipes 13, 15 furnishing'oil and air to-the burner, have been independently valve controlled, so that an operator could admit quantities of oil .and air independently of each other to the burner, varying the quantities of eachas desired, and admitting either oil or air inde-v pendently of the other at will. Such con struction has proven to be exceedingly dangerous, because careless or inefficient oper- Patented July '2, 1914 4 Application flledNovember 2'2, 1911.; Serial rip. 662,547.

ators have in many cases caused serious ex- ,,plosions and injury to persons and property by. admitting on only and flooding the burner and the adjacent fire box without any or an insutlicient supply of air.

It is, therefore, one of the chief objects of theinvention to so construct controlling mechanism for the supply of oil and air that it shall necessitate the operator opening the air. intake to the burner whenever oil is admitted, and will necessitate the cutting off of the oil supply whenever the supply of air is cut off.- The .oilv supply pipe 13 is shown in the present embodiment controlled by a suitable valve within the valve casing'18, which is interposed between sections. of the oil supply pipe 13, so that all oil passing through said oil supply pipe 13 must pass through the valve casing 18, which is provided with a valve of the design adapted to be rotated to open and close the the extreme outer to the valve within casing 21 controlling air not being specifically shown in the drawing,

since it formsno part of the invention. The outer extremity of the valve stem controlling the valve within the oil supply pipe valve casing 18 is shown provided with a suitable handoperating lever 19, securely fixed to the valve stem to rotate the same, suitable fastening means asthe nuts 20 on end offlthe stem being shown.

21 is a valve casing interposed between sections of the burner air supply pipe 15, the;

same being supplied with a suitable rotary valve nct shown, being similar to the valve within the oil valve casing 18, the valve stem being indicated by the reference character 22, and having secured to its outer extremity suitable operating means as the bevel wheel 23. The bevel wheel 23 is provided with gear teeth on the bevel face thereof in mesh with small operating bevel gear 2 1, supported on a shaft 25, which is journaled in a bracket 26 sleeved on or suitably secured .to air. pipe 15, as illustrated, or on other convenient means of support, and at its outer extremity the shaft 25 is provided with suitable operating means as the hand wheel 25 through which motion may be imparted supply pipe15. Heretofore in oil burners supplied with both fuel oil and air, the oil and air sumplies have been separately controlled by independent mechanism, which has made it possible for a careless or igno-. rant operator to 'flood the furnace by shutting off the air and permitting the oil supply to remain open, frequently resulting in seriousaccidents and destructive fires. To make such accidents impossible I provide the oil valve operating lever 19 with a lateral extension indicated at .19, which has its outer extremity adjacent to a lug 23 on the air valve operating bevel wheel 23. The

relative position of the" lug or stop 23 and f". the extension 19 on the oil valve lever beg ing such that they are together or approxi mately sowhen both valves are shut off, with the extension 19* on the oil valve lever behind the lug 23 on the air valve gear, so that any movement of an operator to open the oilvalve will'be resisted by the lug 23 and if the oil valve under such condition be forcibly opened the air valve at the sametime willbe opened correspondingly. This relation of the parts will also insure that the operator will first shut off the oil valve before closing the air 'valve, otherwise the lug 22% will contact with the extension 19 on the oil valve lever and close it. Therefore it will be seen that as longas the parts cooperate between the oil valve lever and the air valve gear, namely,'the extension 19 and the lug 23, remain intact, it will be impossible for oil to be admitted to the burner without air also being admitted and the proper mixture obtained, rendering flooding of the burner and the range to which it may be attached impossible, even at the hands of a careless or indifferent operator. The above described arrangement of the cooperating means between the oil valve leverand the air valve operating means is desirable because while the arrangement necessitates that the oil valve cannot be opened without a corresponding amount of movement being given to the air valve, yet the arrangement does not prevent the opening of the 'air to any amount desired without affecting the 1 oil valve in the least, since the air valve gear 23 may be moved a complete revolution or 360 before contacting with the oil lever through the cooperating or interlocking means described. Ordinarily, it is not desired to open the oil valve lever an entire, revolution, but it is preferred that the quick operating type of valve be used, which will necessitate the moving of the lever 19 through only a relatively small arc, say not, for example, greater'than 180. The total permissible degree of movement of the oil valve lever 19 is preferably adjustably regulated, which may be done by securing to the oil supply pipe 13 or other suitable means of support the adjustable stop 27, which is shown in detail in Fig. 3, and in position on the device in Fig. 1, and consists of an Lshaped member, as illustrated, secured to a collar 28 by machine screw 29, .in such a manner as to allow-the L shaped stop member to be rotated around the screw 29 as an axis.

" The collar 28 of the split type may be adthe improvements of the herein described in- 130 air valve. In devices of this character eretofore the normal operation-has been to open first the air valve .to admit the air to the burner, and then turn on the oil, which will insure the proper mixture, and of course prevent flooding so long ,as air in suflicient quantities is supplied to mix with the incoming liquid fuel. The use of my device does not alter this method of operation so long as the cycle of movements is correctly carried out, because if the air valve be first operated to open it, the lug or stop 23 on the air valve operating gear 23 will be carried away from the extension stop 19 on theoil valve lever, permitting oil valve-lever to be subsequently operated to admit the fuel oil. But if the operator fails to carry out the proper cycle of movements in turning on the oilr'and air, he will either be prevented from turning on the oil or will find it necessary toput sufiicient pressure upon the oil valve lever to admit this air to the burner, while he will at the same time be prevented, when the burner is in operation receiving both fuel oil and air, from cutting off the supply of air without at the same time closing the oil valve.

In order that the invention might be fullyunderstood, the details'of the form of the invention best .known to me have been shown and specifically described, but it is not desired to be limited to the exact details of construction shown, for it will be apparent that those skilled in the art may adopt many modified forms of means withlout departing from the purpose and spirit of the invention.

I claim:

1. The combination with an oil supply and an air supply, of means for regulating said air supply to any desired extent, independently operatable means for regulating said oil supply to a certain extent, and means whereby the regulation of the oil supply may be limited correspondingly by the regulation of the air supply.

2. The combination with an oil supply and an air supply, of means for regulating said air supply, means for regulating said oil supply, and means whereby the regulation' of the oil supply may be limited correspondingly by the regulation of the air sup- The combination with an oil supply and i an air supply, of means for regulating said air supply-to any desired extent, and means for independently regulating said o-il supply to a limited extent determined entirely by the regulation of the air supply.

4. The combination with an oil supply and an air supply, of means for independently regulating the oil supply to a limited extent and for regulating the air supply, and means whereby the regulation of the oil supply may be limited correspondingly by the regulation of the air supply."

5. The combination with an oil supply and 'an air supply, of means for regulating said air supply, means for independently regulating said oil supply to a limited extent, and means controlled by the air supply means whereby the regulation of the oil supply is positively limited by the regulation of the air supply, said means being also adaptedto prevent the closing of the air supply without first'orsynchronously closing the oil supply.

6. The combination with an oil supply and an'air supply, of means for independently operating the said oil supply to a limited extent, means for independently regulating the air supply, and means controlled by the air supply means whereby the regulation of the oil supply is positively limited by the regulation of the air supply, said means being adapted to prevent the closing of the air supply without first closing the oil supply.

7. The combination with an oil burner, of means for supplying fuel oil to the burner, comprising an oil duct leading from the oil'supply to the burner and a valve control therefor, means for supplying air to the burner, comprising a duct leading from the air supply to the burner, and being' provided. with a valve control, and means on the air valve control for limiting supply.

8. The combination with an oilburner, of independently operable means for regulating the supply of oil and air to said. burner, comprising-ducts leading from the oil and air supplies and having valve controls therefor, and means on said air valve control,-by the regulation of which, the

'the oil supply by the regulation of the air oil supply may be limited by the. regulation of the air supply.

9. The combination with an oil burner supported at the union of oil and air sup- I ply pipes of valves for regulating said oil controlling said oil and air pipes, a leverfor operatingi the oil valve, a gear wheel for operating the air valve, and a lug or stop 10 ply a-plpefor supplying air t0 the burner,

disposed onjsaidgearwheel and adapted for engagement with said lever, whereby the regulation of the oil supply'may be limited by the regulation of the air supply and also being adapted to prevent the elosingpf the air-supply without first closing the oil sup- The combination With agiburner of a pipe; for sup'plyingfuel oil-to the burner,

I mqaeife a5 lever for: operating the oilivalve, a: gear I wheel foroperating' the air valve, said gearwheel being supplied with a lug or stop, and an. extension on the oil valve lever j adapted-'to'engage the said lug on thergear ,;f0r.-operating the air valve. i

Intestimony whereof I have signed -,my

{name to-thi's Foecification', in the presence valves for controlling said oil and air pipes,

C. H. SimM. 

